browser.jar:
% content branding %content/branding/ contentaccessible=yes
  content/branding/about.png                 (about.png)
  content/branding/about-background.jpg      (about-background.jpg)
  content/branding/about-logo.png            (about-logo.png)
  content/branding/about-logo@2x.png         (about-logo@2x.png)
  content/branding/about-wordmark.png        (about-wordmark.png)
  content/branding/icon48.png                (icon48.png)
  content/branding/icon64.png                (icon64.png)
  content/branding/icon16.png                (../default16.png)
  content/branding/icon32.png                (../default32.png)
  content/branding/aboutDialog.css           (aboutDialog.css)
